AU1032295A - Method and apparatus for reducing hydrocarbon emissions from a fuel storage tank - Google Patents
Method and apparatus for reducing hydrocarbon emissions from a fuel storage tankInfo
- Publication number
- AU1032295A AU1032295A AU10322/95A AU1032295A AU1032295A AU 1032295 A AU1032295 A AU 1032295A AU 10322/95 A AU10322/95 A AU 10322/95A AU 1032295 A AU1032295 A AU 1032295A AU 1032295 A AU1032295 A AU 1032295A
- Authority
- AU
- Australia
- Prior art keywords
- membrane
- tank
- outlet
- pressure
- storage tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 19
- 229930195733 hydrocarbon Natural products 0.000 title claims description 18
- 150000002430 hydrocarbons Chemical class 0.000 title claims description 18
- 239000004215 Carbon black (E152) Substances 0.000 title claims description 14
- 239000012528 membrane Substances 0.000 claims abstract description 41
- 239000012466 permeate Substances 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 12
- 230000001939 inductive effect Effects 0.000 claims 1
- 238000005086 pumping Methods 0.000 claims 1
- 239000003344 environmental pollutant Substances 0.000 abstract description 10
- 231100000719 pollutant Toxicity 0.000 abstract description 10
- 239000012530 fluid Substances 0.000 abstract description 2
- 239000012855 volatile organic compound Substances 0.000 description 7
- 239000003208 petroleum Substances 0.000 description 6
- 239000002828 fuel tank Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012354 overpressurization Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/04—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants
- B67D7/0476—Vapour recovery systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
Abstract
An apparatus and method for maintaining a desired pressure within a fuel storage tank or tanks while minimizing or eliminating the amount of pollutants discharged from the fuel storage tank(s). A fuel storage tank is provided with a conduit and a chamber interfaced along the path of the conduit such that all fluid passing through the conduit must pass through the chamber. A fractionating membrane is housed within the chamber for capturing pollutants while allowing air to pass through. As pollutants are collected on the fractionating membrane, they permeate, thereby reducing the pressure in the tank and associated conduit. A vapor pump is provided for drawing vapor through the conduit and the membrane, and for drawing pollutants off of the membrane. A pressure transducer located in the tank or associated piping makes the vapor pump responsive to the pressure therein. A vent is further provided for allowing air into the tank and piping and for depressurizing the tank and piping. The apparatus of the present invention may be provided with a conduit for returning the pollutants to the fuel storage tank(s).
Description
METHOD AND APPARATUS FOR REDUCING HYDROCARBON EMISSIONS FROM A FUEL STORAGE TANK.
The present invention relates to apparatus and a method for reducing the discharge of
hydrocarbon pollutants from fuel storage tanks and, in particular, to a fuel storage tank
pressure control system.
When fuel is added to a fuel reservoir, such as the petroleum tank of an automobile from a conventional gas dispenser apparatus such as the dispensing nozzle of a petroleum dispenser, petroleum vapour is displaced from the petroleum tank. If the vapour is not collected in some way, it will be released into the atmosphere. Due to the large number of automobile refuellings, such releases of fuel vapour constitute a significant hazard to the environment, particularly in heavily populated areas. Releases of these vapours, which are composed of volatile organic compounds (VOC's) such as hydrocarbons, are presently the subject of significant and increasing regulation.
In an effort to guard against the release of volatile organic compounds to the environment, several systems have been designed to collect the vapours displaced from automobile fuel tanks during refuelling. One such system called the "balance" system provides a rubber boot which surrounds the dispenser nozzle and forms a seal around an automobile fuel tank filler pipe. This system relies on the volumetric displacement of the vapour by the fluid
transferred through the nozzle to the petroleum tank to force the vapour through the boot, through a connecting conduit, and back into a fuel storage tank. A bulky and cumbersome nozzle is required to effect the necessary seal at the filler pipe. If a perfect seal is not made, then vapour can leak to the atmosphere instead of being returned to the storage tank.
To mitigate the need for a cumbersome dispenser nozzle design and to increase the collection efficiency of the dispenser, systems have been designed wherein vapour collection at the nozzle is assisted by a vacuum pump. An example of such a system is
disclosed in US Patent 5,040,577 to Pope, the disclosure of which is hereby incorporated by reference. A problem that can arise with a pump assisted system is that the pump can have a tendency to pressurize the fuel storage tank and associated piping. If the volume
of vapour collected at the nozzle and conveyed into the fuel storage tank by the vapour
pump is more than the volume of liquid fuel dispensed from the nozzle, the pressure in the
fuel storage tank will be increased. In the cuιτent art of vapour pump assisted vapour recovery systems that use bootless nozzles, a ratio of vapour recovered versus product delivered greater than 1 : 1 is required to achieve desired recovery efficiency at the filler
Pipe-
Both pressurization and depressurization of the fuel storage tank can have detrimental effects. When a fuel storage tank has an internal pressure which is greater than the ambient pressure, there is an increased tendency for fuel and/or vapour to leak from gaps in the piping or the tank. Because many tanks are located underground, it is difficult both to detect leaks and to repair leaks. If the fuel storage tank becomes highly over-pressurized, there is a danger that the structural integrity of the tank may be threatened and even a danger of catastrophic breach of fuel containment. Additionally, over-pressurization of the fuel storage tank lessens the efficiency of the vacuum assist pump by creating a greater pressure differential between the nozzle and the fuel storage tank.
In order to solve the foregoing problems of over-pressurization, several devices and
methods have been developed to vent fuel storage tanks. It will be understood that a large
portion of gas vented from the fuel storage tank will consist of volatile organic compounds. Regulations exist and will likely be made more stringent which limit the amount of VOC's
that may be expelled into the atmosphere by such vents. Several techniques have been
developed to meet these regulations. One such technique is disclosed in US Patent No.
4,118,170 to Hirt. The invention of Hirt involves burning the vapour vented. The danger
of this technique is obvious, and the technique is presently not allowed in many areas. An alternate technique is to cool the vapour and return the condensed vapour to the tank as liquid. This technique is relatively expensive as it requires a refrigeration device.
Therefore, there exists a need for an efficient, cost-effective apparatus and method for removing volatile organic compounds and other pollutants from gas vented from a fuel storage tank. Furthermore, there exists a need for such a method and apparatus which can be retrofitted to existing fuel storage tanks.
The present invention is directed to an apparatus and method for maintaining a desired pressure within a fuel storage tank or tanks while -minimizing or eliminating the amount or mass of pollutants discharged from the fuel storage tank or tanks.
According to a first aspect of the present invention there is provided apparatus for reducing
hydrocarbon emissions from a storage tank, the apparatus comprising a chamber having: an inlet for receiving gases from the tank; a first outlet; a filter element comprising a membrane having the property of permitting hydrocarbon vapours to permeate therethrough; and a second outlet, partitioned from the inlet and first outlet by the
membrane, for receiving vapours permeated through the membrane.
Employing the present invention reduces the quantity of pollutants emitted to the
atmosphere by extracting through the membrane, preferably a fractionating membrane, a
large proportion of the vapours that would otherwise be emitted to the atmosphere.
Preferably the vent is provided with a controllable relief valve such as a solenoid valve to
atmosphere. This is advantageously controlled in dependence on the pressure in the
storage tank such that the valve is opened if the pressure exceeds a predetermined value.
In this manner, minor variations in pressure in the tank can be tolerated without any requirement to vent to atmosphere, but if any larger increase in pressure occurs then this can be released by the valve.
Advantageously a pump is also provided to induce the vapour components to encounter the membrane within the above mentioned range. This encourages vapours to be absorbed through the membrane.
Advantageously the pump is located between the outlet and the tank and is controlled by a switch sensitive to the pressure in the tank, which switch turns the pump on when the pressure in the tank reaches a predetermined threshold, advantageously at or below the threshold at which the control valve opens.
In accordance with a second aspect of the invention there is provided a method for reducing hydrocarbon emissions from a fuel storage tank, the method comprising passing
gases from the tank to an inlet of a chamber, the chamber having: a first outlet; a filter
element comprising a membrane having the property of encouraging hydrocarbon vapours to permeate through the membrane; and a second outlet, partitioned from the inlet and first outlet by the membrane, such that hydrocarbon vapour transmitted through the membrane
is received by the second outlet.
One embodiment of the present invention will now be described, by way of example only,
with reference to the accompanying drawings, in which:
Figure 1 is a schematic view of a vent filter system in accordance with the present invention;
Figure 2A is an enlarged cross-sectional view of the chamber and the filter of Figure 1 ; and
Figure 2B is a cross-section along line I-I of Figure 2 A.
Referring now to the drawings, in which like numerals are used throughout, the fuel storage tank vent system 1 is shown in conjunction with two conventional underground fuel storage tanks 2, 3 containing high and low octane fuel respectively. It will be understood that vent system 1 may be used with any number of storage tanks above or below ground.
Fuel tank 3 has a vapour return line 4 for receiving vapour recovered by a fuel dispenser 5 having means for collecting fuel vapours (not shown). The fuel tanks 2, 3 further include fuel delivery lines 6, 7 for conveying fuel to the dispenser 5. Vent line 8 is provided at the
top of tanks 2, 3 and equalizes the pressure between them, permitting the return of all
vapours to one tank 3 via return line 4. Additional return lines to additional tanks can be
provided but are generally not needed.
Vent line 8 extends to atmosphere, via chamber 9 and control valve 10. A return line 11 connects the lower portion of chamber 9 and tank 3 via pump 12, the pump 12 and control
valve 10 being controlled by tank pressure sensor 13.
In addition to vent line 8, each tank is also vented to atmosphere via vent lines 8A and 8B
each having a respective pressure/vacuum release valve 10A and 10B which ensure no pressure or vacuum exists within the tank outside a predetermined range. Gases will in normal operation be vented through vent line 8 in preference to vent lines 8A or 8B, but any vacuum will be replenished by air being drawn in through lines 8 A or 8B.
Referring now to Figures 2A and 2B, chamber 9 houses filter element 14 positioned such that it separates chamber 9 into two plenums 9 A and 9B. Vapour and gases entering the chamber, from the storage tanks 2 and 3 via inlet 8 A, flow through the filter element 14 to outlet 8B as indicated by arrows 15.
The filter 14 comprises a cylindrical core 16. Membrane 17 is configured as an outer cylinder coaxial with the core cylinder comprising a plurality of stacked and bound thin sheets, each adjacent pair shuts forming an envelope 18. Each envelope 18, formed between the membrane 17 and core 16, is connected to the space within the core 16 by holes 19 in the cylindrical core 16.
The filter element 14 is inserted through aperture 20 in the chamber 9, and is retained in place by threaded member 21, which member both seals the cavity and holds the
cylindrical core 16 in contact with sealing ring 21, such that core 16 seals with return line 11.
Membrane 17 can be a fractionating membrane developed by GKSS-Forschangszentram
Gesthacht GmbH of Germany and described in "Operating Experiences with Membrane Systems in Gasoline Tank Farms", presented by K. Ohlrugge at the 1991 9th Annual Membrane Technology/Planning Conference in Newton, Massachusetts, October 4-6, 1991 or "Volatile Organic Compound Control Technology by Means of Membranes", presented by K. Ohlrugge at the 1993 11th Annual Membrane Technology/Separation Planning Conference in Newton, Massachusetts October 11-13, 1993, the disclosures of which are hereby incorporated by reference. A property of membrane 17 is that it is permeable to selected pollutants including hydrocarbons such as petroleum vapour while it is relatively impermeable to air.
In operation, vent system 1 functions as follows. As fuel is dispensed via fuel dispenser 5, a given volume of liquid, VL, is drained from either tank 2 or 3. Concurrently with the draining of liquid fuel, a given volume of fuel vapour, Vv , is forced into tank 3 through vapour return line 4 by a vapour pump (not shown). Typically, the ratio of Vv to VL will be greater than 1:1, thus, the pressure within the tanks will have a tendency to become greater than the ambient atmospheric pressure. It is also possible that the ratio of Vv to VL will be less than 1:1. This would result in tank pressures less than atmospheric.
Normally, valve 10 will remain closed. However, when the pressure in tanks 2, 3 reaches a given pressure, pressure transducer 13 causes pump 12 to operate. The actuation of pump 12 creates a vapour flow from tank 3, through vent line 8, through chamber 9, and return
line 11 to tank 3. As the vapour flows through chamber 9, it encounters membrane 17. As
the fuel vapour encounters membrane 17, vapours are encouraged to permeate through the membrane by the pressure gradient across the membrane, leaving "clean" air within plenum
9B. Shortly after operation of the pump commences, valve 10 opens releasing this "clean"
air to atmosphere. The increased concentration of the returned vapours may encourage the
vapour to condense within tank 3 until equilibrium is reached.
If the tank pressure drops below atmospheric pressure, then air is drawn in via pressure vacuum release valves 10A and 10B.
In certain applications it may be advantageous to incorporate a pump 22, also controlled by pressure sensor 13, to assist in drawing gases away from the tank.
Certain modifications and improvements will occur to those skilled in the art upon a reading of the foregoing description. It should be understood that all such modifications and improvements are properly within the scope of the following claims.
Claims (14)
1. Apparatus (1) for reducing hydrocarbon emissions from a fuel storage tank (3), the
apparatus comprising a chamber (9) having:
an inlet (8 A) for receiving gases and vapours from the tank (3);
a first outlet (8B); a filter element (14) comprising a membrane having the property of permitting hydrocarbon vapours to permeate therethrough; and a second outlet (11), partitioned from the inlet (8 A) and first outlet (8B) by the membrane (17), for receiving vapours permeated through the membrane (17).
2. Apparatus as claimed in claim 1 wherein the membrane (17) is arranged in the filter element (14) such that gases flowing through the filter element flow across the surface of the membrane (17).
3. Apparatus as claimed in claim 1 or 2 wherein the filter element (14) extends across a flow path (15) between the inlet (8A) and first outlet (8B).
4. Apparatus as claimed in claim 3 wherein the filter element (14) extends across the chamber (9) such that gases flowing from the inlet (8 A) to the first outlet (8B) flow through the filter element (14).
5. Apparatus as claimed in any preceding claim wherein the first outlet (8B) is vented towards atmosphere.
6. Apparatus as claimed in claim 5 further comprising a controllable valve (10) connected between the first outlet (8B) and atmosphere.
7. Apparatus as claimed in claim 6 further comprising a sensor (13) for determining the pressure in the tank and opening the controllable valve if the pressure exceeds a predetermined threshold.
8. Apparatus as claimed in any preceding claim wherein the second outlet (11) is
connected to the tank (3) such that vapours permeating through the membrane are returned to the tank.
9. Apparatus as claimed in claim 8 further comprising a pump (12) located between the second outlet (11) and the tank (3), which pump (12) in operation causes the pressure at the second outlet (11) to decrease relative to the pressure at the inlet (8 A) inducing hydrocarbon vapours to encounter and permeate through the membrane (17).
10 Apparatus as claimed in claim 9 further comprising a sensor (13) for detecting the pressure in the storage tank and causing the pump (12) to be actuated if the pressure exceeds a predetermined value.
11. Apparatus as claimed in any preceding claim wherein the membrane (17) comprises a number of portions which absorb and transmit various components of hydrocarbon vapours.
12. A fuel dispensing system incorporating apparatus as claimed in any preceding claim
wherein vapours from a tank being filled are returned to the storage tank.
13. A method for reducing hydrocarbon emissions from a fuel storage tank, the method
comprising passing gases from the tank to an inlet of a chamber, the chamber having:
a first outlet; a filter element comprising a membrane having the property of encouraging hydrocarbon vapours to permeate through the membrane; and a second outlet, partitioned from the inlet and first outlet by the membrane, such that hydrocarbons transmitted through the membrane are received by the second outlet.
14. A method as claimed in claim 13 further comprising pumping hydrocarbons from the second outlet back to the tank such as to induce vapour to permeate through the membrane.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US153528 | 1980-05-27 | ||
| US08/153,528 US5464466A (en) | 1993-11-16 | 1993-11-16 | Fuel storage tank vent filter system |
| PCT/GB1994/002529 WO1995013984A1 (en) | 1993-11-16 | 1994-11-16 | Method and apparatus for reducing hydrocarbon emissions from a fuel storage tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU1032295A true AU1032295A (en) | 1995-06-06 |
| AU677475B2 AU677475B2 (en) | 1997-04-24 |
Family
ID=22547599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU10322/95A Expired AU677475B2 (en) | 1993-11-16 | 1994-11-16 | Method and apparatus for reducing hydrocarbon emissions from a fuel storage tank |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5464466A (en) |
| EP (1) | EP0726875B1 (en) |
| AT (1) | ATE155437T1 (en) |
| AU (1) | AU677475B2 (en) |
| CA (1) | CA2175999C (en) |
| DE (1) | DE69404323T2 (en) |
| DK (1) | DK0726875T3 (en) |
| FI (1) | FI962084A (en) |
| NZ (1) | NZ276160A (en) |
| WO (1) | WO1995013984A1 (en) |
Families Citing this family (61)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4410597C2 (en) * | 1994-03-26 | 1999-07-22 | Geesthacht Gkss Forschung | Method and device for reducing emissions from breathing lines in storage tanks |
| US5571310A (en) * | 1995-05-12 | 1996-11-05 | Gilbarco Inc. | Volatile organic chemical tank ullage pressure reduction |
| US5843212A (en) * | 1995-05-12 | 1998-12-01 | Gilbarco Inc. | Fuel tank ullage pressure reduction |
| US5803136A (en) * | 1995-09-19 | 1998-09-08 | Gilbarco Inc. | Fuel tank ullage pressure reduction |
| US5611841A (en) * | 1995-09-29 | 1997-03-18 | Membrane Technology And Research, Inc. | Vapor recovery process using baffled membrane module |
| GB2311768B (en) * | 1996-04-03 | 2000-07-26 | Dresser Ind | Gasoline dispensing and vapor recovery system and method utilizing a membrane separator |
| US5755854A (en) * | 1997-03-04 | 1998-05-26 | Gilbarco Inc. | Tank ullage pressure control |
| US6953496B2 (en) * | 1997-03-07 | 2005-10-11 | Vapor Systems Technologies, Inc. | Sub-atmospheric fuel storage system |
| US6293996B1 (en) | 1997-03-07 | 2001-09-25 | Vapor Systems Technologies, Inc. | Fuel storage system with vent filter assembly |
| US5985002A (en) * | 1997-03-07 | 1999-11-16 | Vapor Systems Technologies, Inc. | Fuel storage system with vent filter assembly |
| US6338369B1 (en) | 1998-11-09 | 2002-01-15 | Marconi Commerce Systems Inc. | Hydrocarbon vapor sensing |
| US6174351B1 (en) | 1999-03-26 | 2001-01-16 | Delaware Capital Formation, Inc. | Pressure management and vapor recovery system for filling stations |
| DE10014792A1 (en) * | 1999-06-17 | 2001-01-18 | Daimler Chrysler Ag | Device and method for gas drying |
| US6386246B2 (en) | 1999-11-17 | 2002-05-14 | Marconi Commerce Systems Inc. | Vapor flow and hydrocarbon concentration sensor for improved vapor recovery in fuel dispensers |
| US6418983B1 (en) | 1999-11-17 | 2002-07-16 | Gilbasco Inc. | Vapor flow and hydrocarbon concentration sensor for improved vapor recovery in fuel dispensers |
| US6712101B1 (en) | 1999-11-17 | 2004-03-30 | Gilbarco Inc. | Hydrocarbon sensor diagnostic method |
| US6460579B2 (en) | 1999-11-17 | 2002-10-08 | Gilbarco Inc. | Vapor flow and hydrocarbon concentration sensor for improved vapor recovery in fuel dispensers |
| US6901786B2 (en) * | 1999-11-30 | 2005-06-07 | Veeder-Root Company | Fueling system vapor recovery and containment leak detection system and method |
| US6622757B2 (en) | 1999-11-30 | 2003-09-23 | Veeder-Root Company | Fueling system vapor recovery and containment performance monitor and method of operation thereof |
| US6478849B1 (en) | 2000-08-11 | 2002-11-12 | Dresser, Inc. | Vapor recovery system for fuel storage tank |
| US6357493B1 (en) | 2000-10-23 | 2002-03-19 | Marconi Commerce Systems Inc. | Vapor recovery system for a fuel dispenser |
| US6347649B1 (en) | 2000-11-16 | 2002-02-19 | Marconi Commerce Systems Inc. | Pressure sensor for a vapor recovery system |
| US6608484B2 (en) | 2001-09-24 | 2003-08-19 | Vapor Systems Technologies, Inc. | Diagnostic fuel storage system |
| US6835223B2 (en) * | 2002-02-06 | 2004-12-28 | Vapor Systems Technologies, Inc. | Fuel storage and dispensing system |
| US6840292B2 (en) * | 2002-03-05 | 2005-01-11 | Veeder-Root Company | Apparatus and method to control excess pressure in fuel storage containment system at fuel dispensing facilities |
| US6644360B1 (en) * | 2002-05-06 | 2003-11-11 | Gilbarco Inc. | Membrane and sensor for underground tank venting system |
| US6761190B2 (en) * | 2002-06-21 | 2004-07-13 | Gilbarco Inc. | Underground storage tank vapor pressure equalizer |
| US7111520B2 (en) * | 2002-08-26 | 2006-09-26 | Gilbarco Inc. | Increased sensitivity for liquid meter |
| US6854342B2 (en) * | 2002-08-26 | 2005-02-15 | Gilbarco, Inc. | Increased sensitivity for turbine flow meter |
| US6834686B2 (en) | 2002-09-09 | 2004-12-28 | Delaware Capital Formation, Inc. | Tank pressure management system |
| US6719824B1 (en) | 2003-01-24 | 2004-04-13 | Cms Technology Holdings, Inc. | Cyclic membrane separation process |
| US6887300B2 (en) * | 2003-01-24 | 2005-05-03 | Cms Technology Holdings, Inc. | Cyclic membrane separation process |
| US6830080B2 (en) * | 2003-03-13 | 2004-12-14 | Gilbarco Inc. | Output control for turbine vapor flow meter |
| US6935356B2 (en) * | 2003-03-14 | 2005-08-30 | Gilbarco Inc. | Underground storage tank metering system in a service station environment |
| US20040182246A1 (en) * | 2003-03-21 | 2004-09-23 | Grantham Rodger P. | Sub-atmospheric fuel storage system |
| US8718220B2 (en) * | 2005-02-11 | 2014-05-06 | Holtec International, Inc. | Manifold system for the ventilated storage of high level waste and a method of using the same to store high level waste in a below-grade environment |
| US7270155B2 (en) * | 2005-07-27 | 2007-09-18 | Wei Pin Ho | Gasoline vapor recycling system for gasoline tank |
| US7753034B2 (en) * | 2005-11-18 | 2010-07-13 | Basf Corporation, | Hydrocarbon adsorption method and device for controlling evaporative emissions from the fuel storage system of motor vehicles |
| US20070131281A1 (en) * | 2005-12-13 | 2007-06-14 | Delaware Capital Formation, Inc. | Underground fuel tank vent valve |
| US7909069B2 (en) * | 2006-05-04 | 2011-03-22 | Veeder-Root Company | System and method for automatically adjusting an ORVR compatible stage II vapor recovery system to maintain a desired air-to-liquid (A/L) ratio |
| US20080006333A1 (en) * | 2006-06-27 | 2008-01-10 | Exxonmobil Research And Engineering Company | Structure of a fuel tank for a multi-fuel system |
| US20080308073A1 (en) * | 2007-06-13 | 2008-12-18 | Allen Christopher D | Evaporative emissions canister having an integral membrane |
| US20080308075A1 (en) * | 2007-06-13 | 2008-12-18 | Allen Christopher D | Automotive fuel system for substantially reducing hydrocarbon emissions into the atmosphere, and method |
| US20080308074A1 (en) * | 2007-06-13 | 2008-12-18 | Allen Christopher D | Evaporative emissions canister with external membrane |
| US20080308072A1 (en) * | 2007-06-13 | 2008-12-18 | Raja Banerjee | Hydrocarbon separation from air using membrane separators in recirculation tube |
| US20090120284A1 (en) * | 2007-11-02 | 2009-05-14 | Grantham Rodger P | Reducing pollutant discharge from gasoline storage tanks |
| DE102008014363A1 (en) * | 2008-03-14 | 2009-09-17 | Audi Ag | Ventilation for a reducing agent tank |
| US11569001B2 (en) | 2008-04-29 | 2023-01-31 | Holtec International | Autonomous self-powered system for removing thermal energy from pools of liquid heated by radioactive materials |
| US9001958B2 (en) | 2010-04-21 | 2015-04-07 | Holtec International, Inc. | System and method for reclaiming energy from heat emanating from spent nuclear fuel |
| US8402817B2 (en) * | 2008-05-28 | 2013-03-26 | Franklin Fueling Systems, Inc. | Method and apparatus for monitoring for leaks in a stage II fuel vapor recovery system |
| WO2009146357A1 (en) | 2008-05-28 | 2009-12-03 | Franklin Fueling Systems, Inc. | Method and apparatus for monitoring for arestriction in a stage ii fuel vapor recovery system |
| EP2574594B1 (en) | 2008-06-03 | 2015-01-21 | Gilbarco Inc. | Fuel dispensing equipment utilizing Coriolis flow meters |
| US8096446B2 (en) * | 2008-11-17 | 2012-01-17 | Gilbarco, S.R.L. | Turbine flow meter for use in fuel dispensing envirnoments |
| US8679230B2 (en) * | 2008-12-19 | 2014-03-25 | Michael L. Strickland | Reducing emissions of VOCs from low-pressure storage tanks |
| EP2430635A4 (en) | 2009-05-06 | 2013-12-25 | Holtec International Inc | Apparatus for storing and/or transporting high level radioactive waste, and method for manufacturing the same |
| US8677805B2 (en) * | 2009-05-18 | 2014-03-25 | Franklin Fueling Systems, Inc. | Method and apparatus for detecting a leak in a fuel delivery system |
| US20110088662A1 (en) * | 2009-10-20 | 2011-04-21 | Eaton Corporation | Method of packaging a membrane for use in a venting valve |
| GB201004837D0 (en) * | 2010-03-23 | 2010-05-05 | Airbus Uk Ltd | Fuel system and method |
| US9377332B2 (en) | 2013-03-15 | 2016-06-28 | Gilbarco Inc. | Viscosity dependent flow meter for use in fuel dispensing environments |
| WO2020102219A1 (en) | 2018-11-14 | 2020-05-22 | Franklin Fueling Systems, Llc | Pressure vacuum valve |
| US11420817B2 (en) | 2019-02-20 | 2022-08-23 | Husky Corporation | Pressure vacuum vent |
Family Cites Families (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1341052A (en) * | 1970-07-15 | 1973-12-19 | Ford Motor Co | Process and apparatus for the control of hydrocarbon vapour emissions from a fuel system |
| US3751879A (en) * | 1971-04-26 | 1973-08-14 | Instrumentation Specialties Co | Apparatus for reducing the dissolved gas concentration in a liquid |
| US3861890A (en) * | 1973-05-03 | 1975-01-21 | Alar Eng Corp | Gasoline vapor recovery system and method |
| US3907524A (en) * | 1973-12-13 | 1975-09-23 | Emission Abatement Inc | Vapor recovery method for controlling air pollution |
| US4009985A (en) * | 1975-08-08 | 1977-03-01 | Hirt Combustion Engineers | Method and apparatus for abatement of gasoline vapor emissions |
| US4101297A (en) * | 1975-10-15 | 1978-07-18 | Mitsubishi Jukogyo Kabushiki Kaisha | Process for recovering a solvent vapor |
| JPS5948649B2 (en) * | 1976-05-17 | 1984-11-28 | 三菱重工業株式会社 | Solvent vapor recovery method |
| US4058373A (en) * | 1977-02-18 | 1977-11-15 | Electric Power Research Institute | Combustible gas-in-oil detector |
| SU668875A1 (en) * | 1977-08-18 | 1979-06-25 | Специальное Конструкторско-Технологическое Бюро Научно-Производственного Объединения Автозаправочной Техники | Fuel-dispensing arrangement |
| DE3420373C2 (en) * | 1984-06-01 | 1986-09-18 | Gkss - Forschungszentrum Geesthacht Gmbh, 2054 Geesthacht | Process for the production of an integrally asymmetrical membrane for the separation of gases |
| US4670028A (en) * | 1985-07-01 | 1987-06-02 | Mcgill Incorporated | Absorption-absorption-absorption vapor recovery process |
| US4772295A (en) * | 1986-05-27 | 1988-09-20 | Nippon Kokan Kabushiki Kaisha | Method for recovering hydrocarbon vapor |
| DE8702074U1 (en) * | 1987-02-11 | 1987-04-30 | Schwefer, Hans Juergen, Dipl.-Ing., 5100 Aachen, De | |
| DE3708950A1 (en) * | 1987-03-19 | 1988-09-29 | Werner Kemmelmeyer | Method for continuous degassing of liquid pressure vessels and apparatus for carrying it out |
| US4788556A (en) * | 1987-04-28 | 1988-11-29 | Spectra, Inc. | Deaeration of ink in an ink jet system |
| DE3806107C2 (en) * | 1988-02-26 | 1994-06-23 | Geesthacht Gkss Forschung | Process for discharging organic compounds from air / permanent gas mixtures |
| JPH01270909A (en) * | 1988-04-22 | 1989-10-30 | Japan Gore Tex Inc | Defoaming deaerating device |
| DE3824400A1 (en) * | 1988-07-19 | 1990-01-25 | Dahlhoff Bernd | Process and device for treating a hydrocarbon/air mixture |
| DE3924102C2 (en) * | 1989-07-20 | 1995-01-26 | Geesthacht Gkss Forschung | Membrane for the discharge of unsaturated hydrocarbons and process for their production |
| DE3924501A1 (en) * | 1989-07-25 | 1991-01-31 | Geesthacht Gkss Forschung | MEMBRANE FOR THE SEPARATION OF LIQUID MATERIAL MIXTURES ACCORDING TO THE PERVAPORATION PRINCIPLE |
| ATE201148T1 (en) * | 1989-11-07 | 2001-06-15 | Membrane Tech & Res Inc | METHOD FOR RECOVERING CONDENSABLE COMPONENTS FROM GAS STREAMS |
| EP0443068A1 (en) * | 1990-02-22 | 1991-08-28 | Scheidt & Bachmann Gmbh | Process and device for removing, during vehicle fuelling, of existing and/or released gases |
| US5040577A (en) * | 1990-05-21 | 1991-08-20 | Gilbarco Inc. | Vapor recovery system for fuel dispenser |
| US5209262A (en) * | 1991-01-15 | 1993-05-11 | Carow Walter M | Breakaway hose coupling with integrated swivel mechanism |
| FR2671789B1 (en) * | 1991-01-21 | 1993-04-30 | Schlumberger Ind Sa | DEVICE FOR DISPENSING HYDROCARBONS WITH VAPOR RECOVERY. |
| DE4142411C1 (en) * | 1991-12-20 | 1993-05-06 | Tankanlagen Salzkotten Gmbh, 4796 Salzkotten, De | Petrol vapour extraction pump - has two pistons connected by crank in common cylinder housing |
| DE9205552U1 (en) * | 1992-04-24 | 1993-08-26 | Gossler Kg Oscar | Arrangement with gas recirculation for refueling motor vehicles |
| DE4214551C2 (en) * | 1992-04-27 | 1996-06-20 | Geesthacht Gkss Forschung | Method and device for the separation of gas mixtures resulting from liquids |
| DE4225170A1 (en) * | 1992-07-30 | 1994-02-03 | Preussag Anlagenbau | Automotive fuel storage and delivery system - removes vapours formed during storage and delivery to prevent formation of explosive mixts. |
-
1993
- 1993-11-16 US US08/153,528 patent/US5464466A/en not_active Expired - Lifetime
-
1994
- 1994-11-16 AU AU10322/95A patent/AU677475B2/en not_active Expired
- 1994-11-16 EP EP95900870A patent/EP0726875B1/en not_active Revoked
- 1994-11-16 DK DK95900870.7T patent/DK0726875T3/en active
- 1994-11-16 NZ NZ276160A patent/NZ276160A/en not_active IP Right Cessation
- 1994-11-16 AT AT95900870T patent/ATE155437T1/en not_active IP Right Cessation
- 1994-11-16 DE DE69404323T patent/DE69404323T2/en not_active Revoked
- 1994-11-16 WO PCT/GB1994/002529 patent/WO1995013984A1/en not_active Application Discontinuation
- 1994-11-16 CA CA002175999A patent/CA2175999C/en not_active Expired - Lifetime
-
1996
- 1996-05-15 FI FI962084A patent/FI962084A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK0726875T3 (en) | 1998-02-23 |
| DE69404323T2 (en) | 1997-10-30 |
| EP0726875B1 (en) | 1997-07-16 |
| DE69404323D1 (en) | 1997-08-21 |
| AU677475B2 (en) | 1997-04-24 |
| CA2175999C (en) | 2004-06-08 |
| FI962084A (en) | 1996-07-15 |
| US5464466A (en) | 1995-11-07 |
| EP0726875A1 (en) | 1996-08-21 |
| WO1995013984A1 (en) | 1995-05-26 |
| NZ276160A (en) | 1996-12-20 |
| CA2175999A1 (en) | 1995-05-26 |
| ATE155437T1 (en) | 1997-08-15 |
| FI962084A0 (en) | 1996-05-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| HB | Alteration of name in register |
Owner name: MARCONI COMMERCE SYSTEMS INC. Free format text: FORMER NAME WAS: GILBARCO INC. |